Method for forming images by silver salt diffusion transfer
US5290661A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1992 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for sorting images by silver salt diffusion transfer comprising PA1 imagewise exposing a light-sensitive element comprising a light-sensitive silver halide emulsion layer, PA1 developing the light-sensitive element in the presence of a silver halide solvent using an alkaline processing composition to turn at least a part of unexposed silver halide of the light-sensitive silver halide emulsion layer into a transfer silver halide complex salt, and PA1 transferring at least a part of the silver halide complex salt to an image receiving layer comprising a silver precipitating agent to form images on the image receiving layer, PA1 wherein at least one compound represented by formula (I) is added to at least one of the light-sensitive element, an image receiving element comprising the image receiving layer, and the processing composition in an amount of at least 1.times.10.sup.-6 and less than 1.times.10.sup.-2 mol based on one mol of silver applied per unit area (m.sup.2): ##STR1## wherein Q represents an atomic group for forming a quinone ring; R represents a monovalent group which may be substituted or unsubstituted; and n is an integer of 0 to 4, whereby the maximum density …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.